In Pathfinder Mythic Adventures there is a path ability under the Trickster Path that is giving me a bit of a hard time ruling as a GM:
No One of Consequence (Ex)
Your mythic nature is a cloak that can shield you from the minds and memories of others. Creatures struggle to recognize you, recall your appearance, remember the nature of conversations they had with you, and recount the actions you took when you were in their presence. If a creature makes a deliberate attempt to recall details about time spent with you, it must succeed at a Will save (DC 10 + your tier + your Charisma modifier) to recall anything beyond vague details. In addition, you're under a permanent nondetection effect with a caster level equal to your character level plus your tier. You can end this effect at any time, and can resume it as a swift action.
My issue is interaction between the players. One of the players has taken this ability and I don't know how it interacts with the rest of the party. Do they recognize him? Do they remember him and their past experiences with him? Can he selectively affect people with it?
Furthermore, the Will Save for recalling information regarding him doesn't specify a time of effect. Say, if NPC 1 fails the Will Save, can he attempt to recall information again for a different Will Save? If he can, after what time window?